java7特性

	public class NewFeatureTest {
    public static void main(String[] args) throws IOException, SQLException { 
        int a=0b1111_0000_1111_0000;        //0bxxxxxx, express binary literals
        long m=123_4444_123L;               //xxx_xxx_xx, number literals can be splitted by slash
        System.out.println(a);
        System.out.println(m);

        List<String> str = new ArrayList<>();   //Auto-detect generic type

        try (BufferedReader br = new BufferedReader(new FileReader("dssf.jpg"))) {  //try-with-resource, resource will be assured to close before catch or finally
            System.out.println(br.readLine());
        }catch (NullPointerException | FileNotFoundException e){  //catch can get multiple exceptions
            e.printStackTrace();
        }
    }
}